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<td nowrap="true" class="pageTitle">工件：事件</td><td width="100%">
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<td valign="top">该工作产品指定事情（涉及空间和时间）；比较不正式的说法是所发生的系统必须响应的事情。</td>
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<td>工作产品类型：<a href="./../../core.base_rup/workproducttypes/model_element_74CA3914.html" guid="_n7ZcgN7REdmjRZts2c4ZjQ">模型元素</a></td>
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<div class="sectionHeading">用途</div>
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<td class="sectionTableSingleCell"><a id="XE_event__as_artifact" name="XE_event__as_artifact" class="index" key="事件（event）" text="作为工件"></a><a id="Top" name="Top"></a><a id="XE_event__purpose_of" name="XE_event__purpose_of"></a><a id="Purpose" name="Purpose"></a> 
<p>
    该工作产品用于获取事件的某些特征，例如频率、优先级和响应需求。
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<div class="sectionHeading">关系</div>
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<th scope="row" class="sectionTableHeading">容器工件</th><td colspan="2" class="sectionTableCell">
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<a href="./../../core.base_rup/workproducts/rup_design_model_2830034D.html" guid="{8CDAEAD4-5E84-4F50-87FD-3240ED047DE7}">设计模型</a>
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<th scope="row" class="sectionTableHeading">角色</th><td width="42%" class="sectionTableCell"><span class="sectionTableCellHeading">负责人:
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<a href="./../../core.base_rup/roles/rup_software_architect_DB0BF177.html" guid="{4AC346F0-E6FC-4D2C-8410-2EDF8DDDC91D}">软件设计人员</a>
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<th scope="row" class="sectionTableHeading">任务</th><td width="42%" class="sectionTableCell"><span class="sectionTableCellHeading">输入至:
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</td><td class="sectionTableCell"><span class="sectionTableCellHeading">输出自:
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<th scope="row" class="sectionTableHeading">流程使用情况</th><td class="sectionTableCell" colspan="2">
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<a href="./../../core.base_rup/capabilitypatterns/analysis_design_49725AC4.html" guid="{002674F9-6511-4D15-8623-B761D8C48986}">分析和设计</a>
									&nbsp;&gt;&nbsp;
								<a href="./../../core.base_rup/capabilitypatterns/design_components_13B33BFC.html" guid="{9C683674-97C1-4AEE-8DB0-9514AEFF698E}">设计组件</a>
									&nbsp;&gt;&nbsp;
								<a href="./../../core.base_rup/capabilitypatterns/rup_event_85FA1BD4.html" guid="_CQ1sCRi2Edq_uI8xTPML6g">事件</a>
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<div class="sectionHeading">描述</div>
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<th scope="row" class="sectionTableHeading">主要描述</th><td class="sectionTableCell"><p>
    事件用于识别和捕捉关于外部事件的信息，系统觉察到该外部事件并且必须响应它。还可以使用事件来捕获关于内部事件（例如异常）的信息。
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<th scope="row" class="sectionTableHeading">简述</th><td class="sectionTableCell"><a id="Brief Outline" name="Brief Outline"></a> 
<p>
    事件的重要特征是：
</p>
<ul>
    <li>
        内部对外部 － 是外部事件还是内部事件？
    </li>
    <li>
        优先级 － 为了处理该事件，是否需要使其他处理暂挂？
    </li>
    <li>
        频率 － 该事件发生的频率？
    </li>
    <li>
        频率分发 － 该事件在固定时间间隔发生，还是存在突发现象？
    </li>
    <li>
        响应需求 － 系统必须以何速度响应事件（可能需要区分一般情况和最坏情况）。
    </li>
    <li>
        类型 － 是调用事件、时间事件、信号事件还是更改事件（有关定义请参阅<a class="elementLinkWithUserText" href="./../../core.base_rup/guidances/concepts/events_and_signals_734567DC.html" guid="1.800598287887014E-305">概念：事件和信号</a>）？<br />
    </li>
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<div class="sectionHeading">定制</div>
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<th scope="row" class="sectionTableHeading">说明选项</th><td class="sectionTableCell"><p>
    在状态表图和活动图的环境中，事件指的是状态过渡的触发器。
</p>
<p>
    但是，该工作产品涵盖了更具一般意义的“事件”，即系统必须响应的事件，包括信号、调用、状态更改或时间事件。
</p>
<p>
    另请参阅<a class="elementLinkWithUserText" href="./../../core.base_rup/workproducts/rup_signal_AD16C912.html" guid="{8CA124DA-A80C-45D7-BC65-BA6B4247FF11}">工作产品：信号</a>。
</p>
<p>
    <a id="Tailoring" name="Tailoring"></a>
</p>
<p>
    可以在电子表格、数据库、需求管理数据库捕获事件特征，或作为软件体系结构文档中的表捕获事件特征。
</p>
<p>
    甚至可以作为类、已定型的 &lt;&lt;事件&gt;&gt;
    来捕获它们，但是只应将此作为捕获关于事件的管理信息的一种简便方法，不应与事件发生时传输的数据相混淆。如果调用事件导致数据传输，则应使用被调用操作的特征符来表示数据。如果事件是一个信号，则可以明确地对其数据进行建模（请参阅<a class="elementLinkWithUserText" href="./../../core.base_rup/workproducts/rup_signal_AD16C912.html" guid="{8CA124DA-A80C-45D7-BC65-BA6B4247FF11}">工作产品：信号</a>）。
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<div class="sectionHeading">更多信息</div>
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<th scope="row" class="sectionTableHeading">概念</th><td class="sectionTableCell">
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<li>
<a href="./../../core.base_rup/guidances/concepts/events_and_signals_734567DC.html" guid="1.800598287887014E-305">事件和信号</a>
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